-struct page *lookup_cgroup_page(struct page_cgroup *pc)
-{
- struct mem_section *section;
- struct page *page;
- unsigned long nr;
-
- nr = page_cgroup_array_id(pc);
- section = __nr_to_section(nr);
- page = pfn_to_page(pc - section->page_cgroup);
- VM_BUG_ON(pc != lookup_page_cgroup(page));
- return page;
-}
-